From patchwork Fri Apr 24 01:34:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 11506923 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4118392A for ; Fri, 24 Apr 2020 01:34:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 282E52087E for ; Fri, 24 Apr 2020 01:34:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="a71vT+YY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726144AbgDXBey (ORCPT ); Thu, 23 Apr 2020 21:34:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725884AbgDXBey (ORCPT ); Thu, 23 Apr 2020 21:34:54 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2069C09B042 for ; Thu, 23 Apr 2020 18:34:53 -0700 (PDT) Received: from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A9F96A43; Fri, 24 Apr 2020 03:34:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1587692090; bh=OCIMooeZ0RGXlcgPRdjTxKPthxAq74qkmawbKsM920c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a71vT+YYN+++p3doFpCFyN+EMpzXtl+AbJVs5GvNv4ztKNWq2xjpgY6+9GOlMdhpI s3h2EsqvTDpClB7bTgHQDz2kV8ePV3s7j2QyU42GjQGwNPnU4GTw3EQ4sJ2X8Dm2js H9eF4UZd1s33MtmNVebunZy68wNQLld4/selyF5s= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , Naushir Patuck Subject: [PATCH 2/5] media: uapi: v4l2-core: Add sensor ancillary data V4L2 fourcc type Date: Fri, 24 Apr 2020 04:34:16 +0300 Message-Id: <20200424013419.12954-3-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.25.3 In-Reply-To: <20200424013419.12954-1-laurent.pinchart@ideasonboard.com> References: <20200424013419.12954-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Naushir Patuck Add V4L2_META_FMT_SENSOR_DATA format 4CC. This new format will be used by the BCM2835 Unicam device to return out camera sensor embedded data. Signed-off-by: Naushir Patuck --- Documentation/media/uapi/v4l/meta-formats.rst | 1 + .../uapi/v4l/pixfmt-meta-sensor-data.rst | 32 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 4 files changed, 35 insertions(+) create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst diff --git a/Documentation/media/uapi/v4l/meta-formats.rst b/Documentation/media/uapi/v4l/meta-formats.rst index 74c8659ee9d6..5474086ef6f0 100644 --- a/Documentation/media/uapi/v4l/meta-formats.rst +++ b/Documentation/media/uapi/v4l/meta-formats.rst @@ -21,6 +21,7 @@ These formats are used for the :ref:`metadata` interface only. pixfmt-meta-d4xx pixfmt-meta-intel-ipu3 + pixfmt-meta-sensor-data pixfmt-meta-uvc pixfmt-meta-vsp1-hgo pixfmt-meta-vsp1-hgt diff --git a/Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst b/Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst new file mode 100644 index 000000000000..4a67e204d08a --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst @@ -0,0 +1,32 @@ +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/media/uapi/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections + +.. _v4l2-meta-fmt-sensor-data: + +*********************************** +V4L2_META_FMT_SENSOR_DATA ('SENS') +*********************************** + +Sensor Ancillary Metadata + +Description +=========== + +This format describes ancillary data generated by a camera sensor and +transmitted over a stream on the camera bus. Sensor vendors generally have their +own custom format for this ancillary data. Some vendors follow a generic +CSI-2/SMIA embedded data format as described in the `CSI-2 specification. +`_ + +The size of the embedded buffer is defined as a single line with a pixel width +width specified in bytes. This is obtained by a call to the +:c:type:`VIDIOC_SUBDEV_G_FMT` ioctl on the sensor subdevice where the ``pad`` +field in :c:type:`v4l2_subdev_format` is set to 1. Note that this size is fixed +and cannot be modified with a call to :c:type:`VIDIOC_SUBDEV_S_FMT`. + diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index b2ef8e60ea7d..faf5a0f5eb6b 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1346,6 +1346,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; + case V4L2_META_FMT_SENSOR_DATA: descr = "Sensor Ancillary Metadata"; break; default: /* Compressed formats */ diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 9817b7e2c968..a96146223843 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -766,6 +766,7 @@ struct v4l2_pix_format { #define V4L2_META_FMT_UVC v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */ #define V4L2_META_FMT_D4XX v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */ #define V4L2_META_FMT_VIVID v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */ +#define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */ /* priv field value to indicates that subsequent fields are valid. */ #define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe